Plugin 'FileSystemLibrary' failed to load
I attached my mod profile below, it crashes on startup every time. There are no red mods or yellow mods in my list. I can't even open the game.
20 Replies
>debughere
We need more information to help you. Before launching the game again, open the Mod Manager and use the "Generate debug info" option, then send the zip file produced here in this channel.
If you need to access older log files, see https://docs.ficsit.app/satisfactory-modding/latest/faq.html#Files_Logs
Automated responses for Mada - SOL (770433633256603648)
downgrade_duplicate
The Mod Manager is reporting an error because it's trying to modify an outdated copy of the game. This could be caused by one of two things:
1. One of the installs connected to the Profile you have selected is still running a previous version. To fix this, either uninstall it, update it, or switch to a different Mod Manager profile so that it isn't considered in the update process.
2. You have leftover files in your install directory from downgrading to play a previous version. To fix this, uninstall the game (verify files won't fix this!), delete the game install directory if it still exists (this is NOT the AppData folder, but the location where you installed the game), then reinstall the game, and reopen SMM.
Key Details for SMMDebug-2025-09-22-15-43-48.zip
I havent downgraded at all, and i'm updated to the latest version of satisfactory and smm
just investigating why you got that now
Yep that's a false positive in this case, it's picking up outdated messages from June
though it seems you may have a partial dedicated server install locally which might be confusing SMM a little. Don't think it's related to your issue
Should I just reinstall smm or satisfactory then?
not yet, still looking
>verifysteam
though there's a chance this will help
if that leads to anything being redownloaded, that was almost certainly the issue
reinstalling SMM/satisfactory probably won't do anything helpful
it didnt seem to download or install anything
does the crash still happen with mods turned off? FileSystemLibrary is core Unreal Engine stuff
lemme try
yea it loads just fine in vanilla
>debugmods
Follow this flowchart to troubleshoot issues caused by mods (crashes, unexpected behavior, etc.). More information can be found on the docs: https://docs.ficsit.app/satisfactory-modding/latest/faq.html#_how_can_i_troubleshoot_crash_issues
You do seem to have two different mods for putting artifacts into the Awesome Shop, which might cause a conflict (dunno why that'd affect FileSystemLibrary, though)
10x Awesome Points might not be compatible with 100x Awesome Points too
Ok so, idk what happened but I disabled half the mods and loaded it, seemed to be fixed and I reenabled all of them (ik thats not the procedure) it now its working. Ig sometimes stuff is just buggy
are you 100% sure steam didn't download anything during the verify?
yea, no download data at all
huh, well, hopefully all sorted anyway!